Chronic fatigue syndrome. A practical guide to assessment and management

Abstract:

Chronic fatigue and chronic fatigue syndrome (CFS) have become increasingly recognized as a common clinical problem, yet one that physicians often find difficult to manage. In this review we suggest a practical, pragmatic, evidence-based approach to the assessment and initial management of the patient whose presentation suggests this diagnosis. The basic principles are simple and for each aspect of management we point out both potential pitfalls and strategies to overcome them.

The first, and most important task is to develop mutual trust and collaboration. The second is to complete an adequate assessment, the aim of which is either to make a diagnosis of CFS or to identify an alternative cause for the patient’s symptoms. The history is most important and should include a detailed account of the symptoms, the associated disability, the choice of coping strategies, and importantly, the patient’s own understanding of his/her illness. The assessment of possible comorbid psychiatric disorders such as depression or anxiety is mandatory.

When the physician is satisfied that no alternative physical or psychiatric disorder can be found to explain symptoms, we suggest that a firm and positive diagnosis of CFS be made.

The treatment of CFS requires that the patient is given a positive explanation of the cause of his symptoms, emphasizing the distinction among factors that may have predisposed them to develop the illness (lifestyle, work stress, personality), triggered the illness (viral infection, life events) and perpetuated the illness (cerebral dysfunction, sleep disorder, depression, inconsistent activity, and misunderstanding of the illness and fear of making it worse).

Interventions are then aimed to overcoming these illness-perpetuating factors. The role of antidepressants remains uncertain but may be tried on a pragmatic basis. Other medications should be avoided. The only treatment strategies of proven efficacy are cognitive behavioral ones. The most important starting point is to promote a consistent pattern of activity, rest, and sleep, followed by a gradual return to normal activity; ongoing review of any ‘catastrophic’ misinterpretation of symptoms and the problem solving of current life difficulties.

We regard chronic fatigue syndrome as important not only because it represents potentially treatable disability and suffering but also because it provides an example for the positive management of medically unexplained illness in general.

 

Source: Sharpe M, Chalder T, Palmer I, Wessely S. Chronic fatigue syndrome. A practical guide to assessment and management. Gen Hosp Psychiatry. 1997 May;19(3):185-99. http://www.ncbi.nlm.nih.gov/pubmed/9218987

 

Chronic fatigue syndrome: sufferers’ evaluation of medical support

Abstract:

In response to reports of negative cooperation between sufferers of chronic fatigue syndrome (CFS) and their doctors, semi-structured interviews were conducted with sufferers from two different patient samples.

Satisfaction with support received and with medical professionals in general was low. Sufferers complained about insufficient informational as well as emotional support from their doctors, and as a consequence most opted for alternative or complementary forms of treatment.

In addition, disagreements over illness aetiology and treatment precluded effective cooperation. If satisfaction and compliance are to improve, sufferers will need more information about CFS and more support.

 

Source: Ax S, Gregg VH, Jones D. Chronic fatigue syndrome: sufferers’ evaluation of medical support. J R Soc Med. 1997 May;90(5):250-4. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1296257/ (Full article)

 

Generalized anxiety disorder in chronic fatigue syndrome

Abstract:

A structured psychiatric interview, forming part of a global psychopathological approach, revealed higher prevalence rates of current and lifetime psychiatric disorders and a higher degree of psychiatric comorbidity in patients with chronic fatigue syndrome (CFS) than in a medical control group. In contrast to previous studies, a very high prevalence of generalized anxiety disorder (GAD) was found in CFS, characterized by an early onset and a high rate of psychiatric comorbidity.

It is postulated that GAD represents a susceptibility factor for the development of CFS. A significantly higher prevalence was also observed for the somatization disorder (SD) in the CFS group. Apart from a higher female-to-male ratio in fibromyalgia, no marked differences were observed in sociodemographic or illness-related features, or in psychiatric morbidity, between CFS patients with and without fibromyalgia. CFS patients with SD have a longer illness duration and a higher rate of psychiatric comorbidity.

These findings are consistent with the suggestion of Hickie et al. (1) that chronic fatigued subjects with SD should be distinguished from subjects with CFS.

 

Source: Fischler B, Cluydts R, De Gucht Y, Kaufman L, De Meirleir K. Generalized anxiety disorder in chronic fatigue syndrome. Acta Psychiatr Scand. 1997 May;95(5):405-13. http://www.ncbi.nlm.nih.gov/pubmed/9197905

 

Familial chronic fatigue

A 53-year-old woman presented to her general practitioner with a long history of profound lethargy associated with insomnia and arthralgia mainly affecting her knees. The patient dated her symptoms to a ‘flu-like’ illness six months previously. Medical history was of hypertension treated with an angiotensin-converting enzyme inhibitor and thiazide diuretic. She had also been taking oestrogen replacement since the menopause two years earlier. She had been a blood donor until 13 years previously, donating a total of 24 units of blood. She drank four units of alcohol per week but did not smoke. Physical examination was normal. Initial investigations performed were full blood count, urea and electrolytes, liver function tests, thyroid function tests, random glucose, cholesterol, calcium and urate. All were normal. Rheumatoid factor was negative and viral serology showed a raised IgG antibody titre to Epstein Barr virus, indicative of a past infection. XRays of the knee joints were normal.

A diagnosis of chronic fatigue syndrome was made. Over the following months her symptoms impaired her ability to work, shop and perform household tasks. Further medical consultations revealed no new features or abnormal tests and she took early retirement on the grounds of poor health.

Two years after her initial presentation, her brother, who had also been suffering from longstanding fatigue, was diagnosed as having liver disease.

You can read the rest of this article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2431297/pdf/postmedj00149-0057.pdf

 

Source: George DK, Evans RM, Gunn IR. Familial chronic fatigue. Postgrad Med J. 1997 May;73(859):311-3. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2431297/

 

The marital relationship and health in women with chronic fatigue and immune dysfunction syndrome: views of wives and husbands

Abstract:

The purpose of this study was to describe the association between the marital relationship and the health of the wife with chronic fatigue and immune dysfunction syndrome (CFIDS). The convenience sample of 131 wives with CFIDS and their spouses reported their marital relationships similarly, but the wives reported higher CFIDS symptom scores. Marital adjustment scores, wives’ conflict scores, and husbands’ self-empathy scores were associated with wives’ CFIDS symptom scores. Hierarchical multiple regression models showed wives with higher education, lengthier marriages, dyads with higher marital adjustment, and wives with less conflict and less support were predictive of lower problematic CFIDS symptoms.

 

Source: Goodwin SS. The marital relationship and health in women with chronic fatigue and immune dysfunction syndrome: views of wives and husbands. Nurs Res. 1997 May-Jun;46(3):138-46. http://www.ncbi.nlm.nih.gov/pubmed/9176503

 

Interleukin-1 beta, interleukin-1 receptor antagonist, and soluble interleukin-1 receptor type II secretion in chronic fatigue syndrome

Abstract:

Chronic fatigue syndrome is a condition that affects women in disproportionate numbers, and that is often exacerbated in the premenstrual period and following physical exertion. The signs and symptoms, which include fatigue, myalgia, and low-grade fever, are similar to those experienced by patients infused with cytokines such as interleukin-1.

The present study was carried out to test the hypotheses that (1) cellular secretion of interleukin-1 beta (IL-1 beta), interleukin-1 receptor antagonist (IL-1Ra), and soluble interleukin-1 receptor type II (IL-1sRII) is abnormal in female CFS patients compared to age- and activity-matched controls; (2) that these abnormalities may be evident only at certain times in the menstrual cycle; and (3) that physical exertion (stepping up and down on a platform for 15 min) may accentuate differences between these groups.

Isolated peripheral blood mononuclear cells from healthy women, but not CFS patients, exhibited significant menstrual cycle-related differences in IL-1 beta secretion that were related to estradiol and progesterone levels (R2 = 0.65, P < 0.01). IL-1Ra secretion for CFS patients was twofold higher than controls during the follicular phase (P = 0.023), but luteal-phase levels were similar between groups. In both phases of the menstrual cycle, IL-1sRII release was significantly higher for CFS patients compared to controls (P = 0.002). The only changes that might be attributable to exertion occurred in the control subjects during the follicular phase, who exhibited an increase in IL-1 beta secretion 48 hr after the stress (P = 0.020).

These results suggest that an abnormality exists in IL-1 beta secretion in CFS patients that may be related to altered sensitivity to estradiol and progesterone. Furthermore, the increased release of IL-1Ra and sIL-1RII by cells from CFS patients is consistent with the hypothesis that CFS is associated with chronic, low-level activation of the immune system.

 

Source: Cannon JG, Angel JB, Abad LW, Vannier E, Mileno MD, Fagioli L, Wolff SM, Komaroff AL. Interleukin-1 beta, interleukin-1 receptor antagonist, and soluble interleukin-1 receptor type II secretion in chronic fatigue syndrome. J Clin Immunol. 1997 May;17(3):253-61. http://www.ncbi.nlm.nih.gov/pubmed/9168406

 

Consequences of live poliovirus vaccine administration in chronic fatigue syndrome

Abstract:

The effect of live oral polio virus vaccination on chronic fatigue syndrome (CFS) patients was examined in a double-blind study. CFS patients were allocated randomly to placebo (N = 7) or vaccine (N = 7) conditions. All controls subjects received the vaccine (9).

Vaccine administration was not associated with clinical exacerbation of CFS. However, objective responses to the vaccine revealed differences between patients and controls: increased poliovirus isolation, earlier peak proliferative responses, lower T-cell subsets on certain days post vaccination and a trend for reduced gamma-interferon in the CFS-vaccine group.

Polio vaccination was not found to be clinically contraindicated in CFS patients, however, there was evidence of altered immune reactivity and virus clearance.

 

Source: Vedhara K, Llewelyn MB, Fox JD, Jones M, Jones R, Clements GB, Wang EC, Smith AP, Borysiewicz LK. Consequences of live poliovirus vaccine administration in chronic fatigue syndrome. J Neuroimmunol. 1997 May;75(1-2):183-95. http://www.ncbi.nlm.nih.gov/pubmed/9143253

 

Chronic fatigue syndrome: study of the clinical course of 28 cases

Abstract:

BACKGROUND: Chronic fatigue syndrome (CFS) is an entity of unknown etiopathogenesis without specific markers. The diagnosis is based on clinical criteria. There are few studies evaluating the natural evolution and prognosis-related factors in CFS.

OBJECTIVES: a) to evaluate the outcome of patients suffering from CFS, and b) to detect predictive factors associated with a better prognosis.

MATERIAL AND METHODS: Clinical records of all patients diagnosed of CFS between January 1986 and December 1992 were retrospectively reviewed. Of these patients, we included those fulfilling the CDC criteria for CFS, with a follow-up period greater than one year. We evaluated epidemiological, clinical and evolutive data recorded by their usual physicians. Moreover, the patients were interviewed in order to know their own appreciation with respect to their current clinical status, as well as their present working situation.

RESULTS: Twenty-eight patients were included in the present study. Their mean age was 38 +/- 7. Seventy-five percent of them were women. The mean time of clinical follow-up was of 3.2 +/- 1.8 years. According to evaluation, 21% of patients improved or became asymptomatic. A similar percentage (28%) of improvement was obtained from the interview. Forty-eight percent of cases had transitory or definitive laboral incapacity. Regarding to prognostic factors, we could not find any statistical differences among the analyzed variables except for marital status. In this variable, married patients had better outcome than unmarried patients.

CONCLUSION: CFS is an entity with a poor outcome, since it evolves towards to chronicity in an important number of cases. In addition, strong functional disability may be present, leading frequently to laboral incapacity.

Comment in: Chronic fatigue syndrome. To be or not to be? [Med Clin (Barc). 1997]

 

Source: Miró O, Font C, Fernández-Solà J, Casademont J, Pedrol E, Grau JM, Urbano-Márquez A. Chronic fatigue syndrome: study of the clinical course of 28 cases. Med Clin (Barc). 1997 Apr 19;108(15):561-5. [Article in Spanish] http://www.ncbi.nlm.nih.gov/pubmed/9395421

 

Definition of “chronic fatigue syndrome” (CFS)

Abstract:

The definition of “Chronic Fatigue Syndrome” (CFS) in 1988 was an attempt to establish a uniform basis for the previously heterogeneous approaches to research of this severe and inexplicable state of fatigue. At the same time, researchers wished to narrow down a pathogenetically founded disease entity a priori by specifying precise disease criteria.

The empirical data gathered in accordance with the CFS definition, however, have failed to confirm the assumption that the disease entity is pathogenetically uniform. Furthermore, the originally selected criteria have proven to be impracticable ore theoretically questionable. In the period that followed, modifications that permitted a more comprehensive and yet more differentiated classification of fatigue states of unclear etiology were proposed.

The new research approach avoids postulation of causal entities and puts CFS back in a category with other descriptive states of fatigue.

 

Source: Heyll U, Wachauf P, Senger V, Diewitz M. Definition of “chronic fatigue syndrome” (CFS). Med Klin (Munich). 1997 Apr 15;92(4):221-7. [Article in German] http://www.ncbi.nlm.nih.gov/pubmed/9221305

 

Epidemic neuromyasthenia and chronic fatigue syndrome in west Otago, New Zealand. A 10-year follow-up

Abstract:

BACKGROUND: In 1984, an outbreak of an illness characterized by prolonged unexplained fatigue was reported in West Otago, New Zealand. This outbreak resembled other reported outbreaks of epidemic neuromyasthenia in that affected individuals presented with a spectrum of complaints ranging from transient diarrhea and upper respiratory disorders to chronic fatigue syndrome (CFS).

OBJECTIVE: To obtain a perspective on the natural history of CFS not possible in clinic-based studies.

METHODS: Twenty-three of the 28 patients in the original report were contacted and asked to complete written questionnaires. Interviews were obtained in person or via telephone.

RESULTS: Ten (48%) of the 21 patients with satisfactory interviews appeared to meet the current Centers for Disease Control and Prevention (CDC) case definition of CFS, and 11 were classified as having prolonged or idiopathic fatigue. A return to premorbid activity was seen in most (n = 16 patients, although some reported the need to modify their lifestyle to prevent relapses. A female predominance was noted in those meeting the CDC case definition for CFS, whereas males predominated in patients diagnosed as having prolonged or idiopathic fatigue.

CONCLUSIONS: The high proportion of patients recovering from CFS in the West Otago cluster suggests that epidemic-associated CFS has a better prognosis than sporadic cases. Female sex was confirmed as an important risk factor for CFS.

 

Source: Levine PH, Snow PG, Ranum BA, Paul C, Holmes MJ. Epidemic neuromyasthenia and chronic fatigue syndrome in west Otago, New Zealand. A 10-year follow-up. Arch Intern Med. 1997 Apr 14;157(7):750-4. http://www.ncbi.nlm.nih.gov/pubmed/9125006